Alloy Steel

Alloy steel is a type of steel alloyed with other elements besides of iron and carbon. An iron-carbon alloy formed by adding an appropriate amount of one or more alloying elements on the basis of ordinary carbon steel. According to the difference of added elements and appropriate processing technology, special properties such as high strength, high toughness, wear resistance, corrosion resistance, low temperature resistance, high temperature resistance, and non-magnetic properties can be obtained.


material20Cr, 40Cr, etc.
shaperound, hexagonal
sizeRound bar 2.0mm-80mm, hexagonal bar 4.0mm-50mm
length2M-9M
ToleranceH6-H13
PackagePE stretch film, PP board, wooden box

Please contact us for special name, length, material, precision and other requirements

Additional Information

Alloy steel has higher strength and toughness than carbon steel, and its strengthening effect tends to be obvious with the increase of the degree of unbalanced structure. The strength of annealed alloy steel is not much superior to that of carbon steel. In the normalized state, the strength of alloy steel is significantly higher than that of carbon steel. After quenching and tempering, the strengthening effect of alloy steel is the most significant.

The hardenability of alloy steel mainly depends on the carbon content, which is slightly higher than that of carbon steel with the same carbon content, but the hardenability and tempering stability of alloy steel are significantly improved, so alloy steel is suitable for manufacturing cross-sections in stainless steel engineering Large size, requires a thicker hardened layer, or requires steel with high strength, hardness, plasticity and toughness, and the cooling rate of alloy steel is slower than that of carbon steel during quenching, and it is not easy to deform and crack. Small parts are particularly advantageous.

Some alloy steels also have good hot hardness and other special properties, such as heat resistance, corrosion resistance, wear resistance and magnetic properties.

The forming process and heat treatment process are also complex, so carbon steel should be preferred under the premise of meeting the requirements of use. However, for stainless steel parts with large size and complex shape, which require high strengthening performance and high precision, or require hot hardness and other For parts with special properties, alloy steel should still be used.

Application

It is used for parts with small cross-section, medium pressure and small impact load, such as worm, main shaft, gear, shaft, friction wheel of mechanical continuously variable transmission, governor sleeve, etc.;

Shafts, connecting rods working at high speed and high bending load, gear shafts, gears, water pump rotors, clutches, small shafts, mandrels and frictional parts on coal carriers working at high speed and high load without strong impact load ;

Used as tie rods, important welded and stamped parts;

Welded structures and riveted structures that work under vibration loads, such as high-pressure blower blades, valve plates, high-speed and high-load shafts, gears, sprockets, clutches, bolts, screws, etc.